Die-plate for embossing-machines.



No. 630,672. Patented Aug. 8, I899.

J. EBERHARD.

DIE PLATE FOR EMBOSSING MACHINES.

(Application filed Mar. 31, 1899.)

(No Model.)

WITNESSES "m: nonms wzrzns co. mm'mumu" WASNINGTON. n, c.

UNllTED STATES PATENT Fires.

JOSEPH EBERHARD, OF NEW YORK, N. Y.

DIE-PLATE FOR EMBOSSING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 630,672, dated August 8, 1899.

Applioation filed March 31, 1399.

To all whom it may concern.-

Be it known that I, J osEPH EBERHARD, of

the city of New York, borough of Brooklyn, in the county of Kings and State of New York, have in vented a new and Improved Die-Platefor Embossing-Machines, of which the following is a full, clear, and exact description.

The invention relates to embossing-machines; andits object is to provide a new and improved die-plate arranged to securely hold a die or dies in place and to. permit of conveniently and quickly adjusting the die without the aid of skilled labor and to obtain accurate registrationof the male and female dies, so as to insure first-class work.

The invention consists of novel features and parts and combinations of the same, as will be fully described hereinafter and then pointed out in the claims.

A practical embodiment of my invention is represented in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a face view of a die-plate in position on the embossingfpresswwith two dies secured to the plate. Fig. 2 is "an edge view of the same. Fig. 3 is a transverse section of the same on the line 3 3 in Fig. 1 and with the male and female dies in engagement, and Fig. 4 is an enlarged plan view of the improvement on the line 4 tin Fig. 1. r

In embossing machines heretofore constructed the dies were glued or cemented to' cardboard plates in such a manner as to register with each other when brought opposite in the embossing-machine by the usual mechanism employed forthe purpose. dies, the female die, is usually of metal, with the design engraved thereon, and the other (or the male) die is usually of celluloid or like material. It requires considerable time and skilled labor to gluethe dies in position on the plates so that they register accurately when making an impression,and it takes con-' siderable time for the glue or other binding substance used to harden and set before the plates can be placed in .position in the embossing-machine. The dies thus arranged on the plates are liable to get out of register owing to shrinkage or expansion of either of the cardboard plates carrying the dies, and if this One of the:

Serial No. 711,255. (No model.)

' "plate and droppedinto the working parts of the machine, thereby injuring the latter to a considerable extent before the machine could be stopped.-

With the improvements presently to be described in detailthe operator is enabled to securely fasten the metal die in proper position on the plate and to instantly shift the metaldie and bringitinto accurate registration with the celluloid die.

As illustrated in Fig. 1, two female dies A are shown on a plate B, attached to a press Qrernbossing-machine O in the usual manner, p'r'eferablyiby setting the lower edge of the plate on a flange D and engaging the upper end by clamps E, as is plainly indicated in Figs.

1 and 2. The male dies F for the female dies A on the plate B are glued or otherwise fastened to a die-plate G to be set in the press in such a manner that when the press is actuated the corresponding dies A and F register with each other to make the desired impression.

Each of the dies A is provided with countersunk apertures A, loosely engaged by screws H, each screwing into one of a series of tappeted or threaded apertures B, arranged all over the plate B in close proximity to each other, as indicated in Figs. 1, 3, and 4. The head H of the screw H extends in the countersink. of the aperture A to be below the face of the die, as is plainly indicated in Fig. 4, and said head engages the bottom of the countersink to securely fasten the plate A to the plate B upon screwing up the screw H. As the threaded apertures B are very close together, it is evident that when the die "A' is placed inposition'on the plate B then the apertures A, which are considerably larger than the apertures B, embrace a number of such apertures B, as indicated on the die A at the left in Fig. 1, so that the screws can be readily screwed into the apertures B, registering with the apertures A at the time to secure the die in place and at the same time allow a shifting of the diein any desired direct-ion before finally fastening the die in place on the plate to bring the design on the diein proper register with the male die F 011 the other plate G.

It is evident from the foregoing that in case the dies A and F are out of register for any cause whatever the operator by loosening the screws H can readily shift the die A to again bring the two dies A and F in register without removingthe die from the plate B. hen the desired registration is obtained,the screws H are again screwed up to securely fasten the die in place. It is further evident that the dies A are not liable to become accidentally detached from the plate B while the press is in use,-and dies of various sizes and with differently-spaced apertures A can be used on the same plate B, as'eachaperture A is sure to' register with at least one of the apertures B to permit of inserting the screw H to fasten thedie in the proper place;

Having thus fully described my invention, I c'laim'a'snew anddesire to secure by Letters Patent- 1. An embossing-machine provided with a die-plate having a series of threaded apertn res arranged allover the plate in close proximity to each other, dies having apertures larger than the apertures in the die plate whereby when the die is placed in positiouon the plate, the apertures in the said die each embrace a plurality of the apertures in the series of threaded apertures arranged close to one another and distributed all over the plate, a female die having circular countersunk apertures located at two or more corners of the die, the said apertures being larger than the apertures in the die-plate whereby when the die is placed in position on the plate, the circular apertures in the die each embrace a plurality of the apertures in the'plate,

and screws passing looselythroughsaid aper tures in the die, and each screwing into one of said threaded apertures inthe plate, the construction permitting a ready shifting of the die in any desired direction, theheads-of the screws extending in the countersinks of the apertures and adapted when screwed up toengage the bottoms of the countersinksto secure the die-'in'place substantiallyas'sliown and described.

JOSEPH EBERILA'RD.

Witnesses: I

FRED: G: BRUNCK, GEORGE DIETRICH. 

